CVE-2026-95846 — Moquette publishes Last-Will messages without enforcing write authorization
Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, PostOffice.publishWill publishes a client's Last-Will message without applying the canWrite authorization and reserv…
Published: 2026-09-23 · CVSS: 8.7 · CVSS 4.0
Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, PostOffice.publishWill publishes a client's Last-Will message without applying the canWrite authorization and reserved-topic checks used for a normal PUBLISH. A client can configure a Will for a topic that the client is not permitted to write and cause the broker to publish the unauthorized message when the client disconnects unexpectedly. This issue allows unauthorized message injection into restricted topics. This issue is fixed in version 0.18.1.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7